McCaysville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.5 °C (low) to 20.8 °C (high). Annual precipitation averages 1563.6 Millimeters. McCaysville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.5 °C | 9.6 °C | 136.91 mm |
| February | -0.8 °C | 11.8 °C | 134.37 mm |
| March | 2.4 °C | 16.1 °C | 148.59 mm |
| April | 6.3 °C | 21.3 °C | 132.08 mm |
| May | 11.4 °C | 25.1 °C | 123.44 mm |
| June | 15.8 °C | 28.5 °C | 139.95 mm |
| July | 18 °C | 30.2 °C | 141.73 mm |
| August | 17.5 °C | 29.9 °C | 125.48 mm |
| September | 13.9 °C | 27.3 °C | 120.14 mm |
| October | 7.4 °C | 22.1 °C | 88.9 mm |
| November | 1.8 °C | 16.1 °C | 128.78 mm |
| December | -0.7 °C | 11.3 °C | 143.26 mm |
| Annual | 7.5 °C | 20.8 °C | 1563.63 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |